Plugin Installation Aborted

I've written myself a simple filter plugin in java. I developed and tested it on an Ubuntu 20.04 with java 11.0.8, everything works just fine.
Then I copied it to a Debian Baster (version 10.4), also with java version 11.0.8, but when I try to install it I always get the message:
Installation Aborted, message: "\x03\x0E\xD8F-\"\xA9G" is not an octal string
Currently I have no idea how to solve this problem, I would be very pleased about support.

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